Ladder.



PATENTED DEC. 1, 1903.

P. M. GARRISON & D. W. BRAGKBTT.'

LADDER.

APPLICATION FILED APR. 1a, 1903. no MODEL.

a v g glz Guam? Tu: NORRVS PETERS co. FHOYD-LITNOV, WASHINGTON, D. c.

UNITED STATES l atented December 1, 1903.

PATENT OFFICE.

FURMAN M. GARRISON AND DAVID BRACKETT, OF VINELAND,

NEW JERSEY.

LADDER..

SPECIFICATION forming part of Letters Batent No. 745,343, dated December1, 1903.

Application filed April 18, 1903. Serial No. 152,371. (No model.

.To all whom it may concern.-

Be it known that we, FURMAN M. GABRI- SON and DAVID W. BRAOKETT,citizens of the United States, residing at 'Vineland, in the county ofCumberland and State of New J ersey, have invented certain new anduseful Improvements in Ladders; and we do hereby declare the followingto be a full, clear, and exact description of the invention, such aswill enable others skilled in the art to which it appertains to make anduse the same, ref-- erence being had to the accompanying drawings, andto the figures of reference marked thereon, which form a part of thisspecification.

This invention relates particularly to trussed ladders, and has for itsobject to provide improved wire trusses for the stiles and roundsthereof. The wires of which the trusses are formed are threaded orextended through the stiles and under the rounds and serve to supportthe rounds and also to bind the stiles together.

In the accompanying drawings, Figure 1 is a front elevation of theladder, partly in section. Fig. 2 is a side elevation thereof, and Fig.3 is a diagrammatic illustration of the course of the wire which formsthe trusses for the rounds.

Referring specifically to the drawings, 6 indicates the stiles of theladder,and7 the rounds thereof, which do not differ materially from theordinary construction.

Front and rear trusses for the stiles are indicated at 8, formed of asingle wire for each stile. Each wire extends through holes 9, extendingfrom front to back through the stiles, at the top and bottom thereof,and overstruts 10 at the middle of the ladder and under staples 11between the struts and the ends of the ladder. As said before, the trussfor each stile is formed of a single piece of wire bent through theholes 9 and fastened, preferably at the top, by winding around theround, as at 8. These trusses give the direct, or front and rear,support to the stiles.

Side trusses for the stiles are indicated at 12, comprising a singlepiece of wire which is fastened and started at the top of one stile, asat 12, continued under staples 13 and over a strut 14 on the outside ofsaid stile, thence through a transverse hole 15 and across the ladderunder the strut 7 a of the lower round, and thence through a similaropening 15 in the other stile and up the outside thereof in a similarmanner to the top. This wire forms lateral trusses for the ladder.

The rounds are trussed by a wire 16, which is crossed or looped from oneside of the ladder to the other in the following manner: One end of thewire is attached to the top round at the coil 8, above referred to, andextends thence under the strut 7 a of the top round, through a hole 17at the other end of the round, thence down the side of the stile to thenext round, thence through the hole 17 and under the strut of the secondround, thence through the hole 17 at the other end of the said round,thence down the side of the other stile, and thence back and forth insimilar manner under the successive rounds to the bottom round, whenceit is threaded upwardly through the same holes and under the samerounds, but in opposite directions, until the top of the other stile isreached, where the end of the wire is'fastened, as at 8". The effect ofthis construction is to form loops the strands of which cross each otherunder each round, so that both strands form a truss for each round andalso form bindingloops which hold the stiles together. diagrammaticillustration in Fig. 3 clearly indicates the course of the wires.struction permits the use of light flexible wire and the formation of alight and strong ladder therefrom.

What we claim'as new, and desire to secure by Letters Patent, isv 1. Aladder having a continuous truss-wire looped through the stiles andunder the successive rounds, and struts between the rounds and the wire.

The

The con- 2. A truss for a ladder, comprising a continuous wire loopedthrough the stiles and under the successive rounds, forming a suecessionof loops Wh ioh bind the stiles together.

3. A trussed ladder comprising stiles, rounds, at truss-Wire crossedfrom one stile to the other under successive rounds, and struts betweenthe rounds and the Wire.

In testimony whereof We affix our signatures in presence of twowitnesses.

FURMAN M. GARRISON. DAVID WV. BRAOKET'I.

Witnesses:

MARTIN BoWERs, JOHN MCCOY.

